Vibrating propeller



(No Model.)

J. S. LAMAR;

VIBRATING PROPELLER.

No. 398,629. Patented Feb. 26, 1889.

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N. PETERS. Plwlu-Ulhogmpher, Washington. D. c.

UNTTE D STATES PATENT OFFICES JAMES LAMAR, Oh VALDUWPA, GEORGTA.

VIBRATING PROPELLER.

EwPECIFICATIO'N forming" part of Letters Patent No. 398,629, datedFebruary 26, 1889. Application filed December 12, 1888. Serial No.293,352. (No model.)

of Georgia, have invented certain n ow and use i l'ul Improvements inRowing Apparatus; and I do declare the follmving to be a full, clear,

and exact litFiPl'lPhlOll ot the invention, such 1 as will enable othersSix'lllOLl in the art to which I r rowing the transverse bar handlebrace 1 1s it ap1:)ertains to make and use the same, referencebeing hadto the accompanying drawings, and to letters or figures of referencemarked thereon, which form a part of this specification.

Figure] of the d rawiligs is a representation of this invention and is aside view. Fig.

is a front view, the boat being shown in section. Fig. 3 is a detail anda side view. Fig. i is a detail and a front view. Fig. is a de tail anda top view.

This invention has relation to rowing apparatus; and it consists in theconstruction and novel combination of devices, as hereinafter set forth,and pointed out in the appended claims.

In the accompanying drawings, the letter A designates a boat, and B Bthe sides thereof.

C C are inclined fulcrum-bars, which extend in the vertical planes foreand aft above the gunwale, their lower portions, a a, being inwardlybent to conform to the shape of the boat, to which they are securelybolted. The height to which these fulcrum-bars rise above the gunwale isusually about three feet, and braces 79 are applied to make thefulcrumbars firm. To the upper ends of the fulcrumbars are bolted thesupplementary angle-i rons .l) I), which receive the outer ends of thepivot-bolts c c, which pass through said ful- (rum-bars and through theupper cndsot" the pendent paddle-shanks (I (Z or hangers. The.I'ulcrum-bars and angle-irons may have series of perforations, asindicated at c c, to permit ('tdjustnicnt ot' the paddlc-shanks, so thatthe paddles may be made to work, light or deep in the water, accordingto iequirmnent.

The paddle-shanks (Z (Z are each of angular i'orm, being bent outwart'lat right angles at and downward at g, the horizontal portion 71, betweenf and g, serving to carry the lower part of each shank, to which thepaddle l is joined, outward clear of the side of the boat. The paddle ispreferably of scoop form, and is connected to the shank by a knee-jointor stop-joint, as at:- r, whereby the paddle may easily rise upward inrear, but when pulled in the water is hold tirmlyin line with thatportion oi"; the shank to whichit is connected.

Each paddle-shank is provided with a short handle, K, extending inward;but for steady preferred. This handle-bar extends across the boat. andis provided with bifurcated bearings a at its ends, which are designedto engage the paddle-shank, and at the same time to be readily removabletherefrom. By means of this handle-bar both paddles may be operated inunison, and should it be necessary to work either one separately, thehandle-bar can be at once disengaged at that end. The handle-bar mayrest on projections of the paddle-shanks or on slide-bearings at tachedto the gunwale of the boat and raised a suitable distance above thesame. \Vith the handle-bar both paddles maybe operated with one hand.\Vhen the boat is long, several of these appliances may be connectedthereto in series.

The stop-joint r is preferably a cross-head at the end of a verticalslide, nnwhich is movable in bearings 12, and at its upper portion isprovided with an inclined arm, 3, which on gages a slot in an adjustablebearing, t, connected to the horizontal portion ot' the paddle-shank.'hen this hearing is moved in one direction, its engagement with theinclined arm 3 causes the slide on to rise until the cross-hcad or stop1 is above the pivot con n ccting the paddle to the end of the shank;but when the bearing 1 ismovcd in the opp0- site (lllGCllOll, the slideand stop are depressed below the pivot and the action of the paddle isreversed.

llaving described this invention. what l claiimand desire tosecureby'Lottcrs Patent, is-

I. The (annbiuatiou, with the fulcrum-supports and angular pmulentpaddle-shanks, ot'

' the paddles and the stop-joints, each consisting of a slide having atits lower end a crosshead engaging with the respective paddle, and whichslide moves in bearings upon the paddle-shank, and the removabletransverse bar, substantially as specified.

3. The combination, with fulcrum-bars attached to the boat, and pendentpaddlesh'anks, of the bifurcated transverse handlebar, substantially asspecified.

In testimony whereof I affix my signature in presence of two witnesses.

JAMES S. LAMAR.

\Vitnesses:

M. B. LANE, E. V. LANE.

